halo ce takes place directly after the book Halo: The Fall of Reach, by Eric Nylund, and is in written for with the book Halo: The Flood. then halo 2 is directly after and during (at least the beginning of) Halo: First Strike and Halo: Ghosts of Onyx. it is unknown when halo 3 will take place, but halo wars takes place almost thirty years before halo ce, when the covenant and humans were just beginning to fight (which is strange, since humans only learn about the existance of hunters in the latter parts of the Halo: The Fall of Reach, and there are Hunters in the concept art for Halo Wars). It is possible that u can control halo wars armies as the covenant, but it is definite that u can countrol the UNSC forces and the aircraft/ground units like the Scorpion Main Battle Tank or the Shortsword fighter. i agree with Halo_92... it should be for the computer, not the 360, since it involves selecting units and moving them in certain ways. it would be like a SWEET version of ages of empire or something. anyways... halo 3 will be cool, and halo wars too, so buy 'em cause the story is cool and it has the best graphics ever. for info about halo 3, go to
http://en.wikipedia.org/wiki/Halo_3), and to get info/concept art/faq's about halo wars, go to
http://halowars.com). halo... is awesome. read the books it makes a lot more sense for the story's sake.
TXH-1138
ps. Eric Nylund is the best halo arthor... the other guy William C. Dietz just isn't good he's just writing cause he likes to write about people getting their guts ripped out by quad-jawed aliens and then a big dude in armor coming and kicking their butts... Nylund can actually write.